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<div class="title">assertions.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// Copyright (c) 2005, Google Inc.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// All rights reserved.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// </span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// met:</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// </span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// in the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// distribution.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// this software without specific prior written permission.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// </span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// ---</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// This file contains #include information about logging-related stuff.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// Pretty much everybody needs to #include this file so that they can</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// log various happenings.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">//</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#ifndef _ASSERTIONS_H_</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span><span class="preprocessor">#define _ASSERTIONS_H_</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#include <stdarg.h></span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#ifdef HAVE_UNISTD_H</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span> <span class="comment">// for write()</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor"></span><span class="preprocessor">#include <string.h></span> <span class="comment">// for strlen(), strcmp()</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#include <assert.h></span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#include <errno.h></span> <span class="comment">// for errno</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#include <sstream></span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#include <cassert></span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#include "<a class="code" href="logger_8hpp.html">logger/logger.hpp</a>"</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#include <boost/typeof/typeof.hpp></span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">static</span> <span class="keywordtype">void</span> __print_back_trace() {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"GraphChi does not currently have the _print_back_trace implementation!"</span> << std::endl;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// On some systems (like freebsd), we can't call write() at all in a</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// global constructor, perhaps because errno hasn't been set up.</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// Calling the write syscall is safer (it doesn't set errno), so we</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// prefer that. Note we don't care about errno for logging: we just</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// do logging on a best-effort basis.</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#define WRITE_TO_STDERR(buf, len) (logbuf(LOG_FATAL, buf, len))</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// CHECK dies with a fatal error if condition is not true. It is *not*</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// controlled by NDEBUG, so the check will be executed regardless of</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// compilation mode. Therefore, it is safe to do things like:</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// CHECK(fp->Write(x) == 4)</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#define CHECK(condition) \</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="preprocessor"> if (__builtin_expect(!(condition), 0)) { \</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor"> logstream(LOG_ERROR) \</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor"> << "Check failed: " << #condition << std::endl; \</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor"> __print_back_trace(); \</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor"> throw("assertion failure"); \</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// This prints errno as well. errno is the posix defined last error</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// number. See errno.h</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#define PCHECK(condition) \</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"> if (__builtin_expect(!(condition), 0)) { \</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor"> const int _PCHECK_err_no_ = errno; \</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"> logstream(LOG_ERROR) \</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor"> << "Check failed: " << #condition << ": " \</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor"> << strerror(err_no) << std::endl; \</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor"> __print_back_trace(); \</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor"> throw("assertion failure"); \</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment">// Helper macro for binary operators; prints the two values on error</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment">// Don't use this macro directly in your code, use CHECK_EQ et al below</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment">// WARNING: These don't compile correctly if one of the arguments is a pointer</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment">// and the other is NULL. To work around this, simply static_cast NULL to the</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment">// type of the desired pointer.</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor">#define CHECK_OP(op, val1, val2) \</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor"> const typeof(val1) _CHECK_OP_v1_ = val1; \</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor"> const typeof(val2) _CHECK_OP_v2_ = (typeof(val2))val2; \</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"> if (__builtin_expect(!((_CHECK_OP_v1_) op \</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor"> (typeof(val1))(_CHECK_OP_v2_)), 0)) { \</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor"> logstream(LOG_ERROR) \</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor"> << "Check failed: " \</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor"> << #val1 << #op << #val2 \</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"> << " [" \</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor"> << _CHECK_OP_v1_ \</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor"> << ' ' << #op << ' ' \</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor"> << _CHECK_OP_v2_ << "]" << std::endl; \</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"> __print_back_trace(); \</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"> throw("assertion failure"); \</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#define CHECK_EQ(val1, val2) CHECK_OP(==, val1, val2)</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor"></span><span class="preprocessor">#define CHECK_NE(val1, val2) CHECK_OP(!=, val1, val2)</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor"></span><span class="preprocessor">#define CHECK_LE(val1, val2) CHECK_OP(<=, val1, val2)</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor"></span><span class="preprocessor">#define CHECK_LT(val1, val2) CHECK_OP(< , val1, val2)</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor"></span><span class="preprocessor">#define CHECK_GE(val1, val2) CHECK_OP(>=, val1, val2)</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor"></span><span class="preprocessor">#define CHECK_GT(val1, val2) CHECK_OP(> , val1, val2)</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment">// Synonyms for CHECK_* that are used in some unittests.</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#define EXPECT_EQ(val1, val2) CHECK_EQ(val1, val2)</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_NE(val1, val2) CHECK_NE(val1, val2)</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_LE(val1, val2) CHECK_LE(val1, val2)</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_LT(val1, val2) CHECK_LT(val1, val2)</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_GE(val1, val2) CHECK_GE(val1, val2)</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_GT(val1, val2) CHECK_GT(val1, val2)</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_EQ(val1, val2) EXPECT_EQ(val1, val2)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_NE(val1, val2) EXPECT_NE(val1, val2)</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_LE(val1, val2) EXPECT_LE(val1, val2)</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_LT(val1, val2) EXPECT_LT(val1, val2)</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_GE(val1, val2) EXPECT_GE(val1, val2)</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_GT(val1, val2) EXPECT_GT(val1, val2)</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor"></span><span class="comment">// As are these variants.</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#define EXPECT_TRUE(cond) CHECK(cond)</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_FALSE(cond) CHECK(!(cond))</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor"></span><span class="preprocessor">#define EXPECT_STREQ(a, b) CHECK(strcmp(a, b) == 0)</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_TRUE(cond) EXPECT_TRUE(cond)</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_FALSE(cond) EXPECT_FALSE(cond)</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor"></span><span class="preprocessor">#define ASSERT_STREQ(a, b) EXPECT_STREQ(a, b)</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#define ASSERT_MSG(condition, fmt, ...) \</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"> if (__builtin_expect(!(condition), 0)) { \</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor"> logstream(LOG_ERROR) \</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"> << "Check failed: " << #condition << ":\n"; \</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor"> logger(LOG_ERROR, fmt, ##__VA_ARGS__); \</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"> __print_back_trace(); \</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor"> throw("assertion failure"); \</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment">// Used for (libc) functions that return -1 and set errno</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor">#define CHECK_ERR(invocation) PCHECK((invocation) != -1)</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment">// A few more checks that only happen in debug mode</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="preprocessor">#ifdef NDEBUG</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_EQ(val1, val2)</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_NE(val1, val2)</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_LE(val1, val2)</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_LT(val1, val2)</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_GE(val1, val2)</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_GT(val1, val2)</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_TRUE(cond)</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_FALSE(cond)</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_MSG(condition, fmt, ...)</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_EQ(val1, val2) CHECK_EQ(val1, val2)</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_NE(val1, val2) CHECK_NE(val1, val2)</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_LE(val1, val2) CHECK_LE(val1, val2)</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_LT(val1, val2) CHECK_LT(val1, val2)</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_GE(val1, val2) CHECK_GE(val1, val2)</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"></span><span class="preprocessor">#define DCHECK_GT(val1, val2) CHECK_GT(val1, val2)</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_TRUE(cond) ASSERT_TRUE(cond)</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_FALSE(cond) ASSERT_FALSE(cond)</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor"></span><span class="preprocessor">#define DASSERT_MSG(condition, fmt, ...) \</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor"> if (__builtin_expect(!(condition), 0)) { \</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="preprocessor"> logstream(LOG_ERROR) \</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="preprocessor"> << "Check failed: " << #condition << ":\n"; \</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="preprocessor"> logger(LOG_ERROR, fmt, ##__VA_ARGS__); \</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="preprocessor"> __print_back_trace(); \</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor"> throw("assertion failure"); \</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="preprocessor">#ifdef ERROR</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="preprocessor"></span><span class="preprocessor">#undef ERROR // may conflict with ERROR macro on windows</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor">#endif // _LOGGING_H_</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="preprocessor"></span></div>
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